Final answer:
Socialism is the political ideology that favors using government power to bring about change for the less fortunate through social ownership of the means of production and government intervention.
Step-by-step explanation:
The political ideology that favors the use of government power to bring about change for the less fortunate is socialism. Socialism involves the social ownership of the means of production and the control of farms, factories, and business offices by the people. In a socialist system, the government plays a significant role in addressing poverty and inequality through policies such as wealth redistribution and social welfare programs.